package student;
public class iStudent {
    public static void main(String[] args) {
        //通过Student 类创造对象]

        Student s1=new Student();
        s1.setName("yingying");
        s1.setGender("famale");
        s1.setAge(22);
        s1.setId(42);
        System.out.println(s1.toString());

    }
}
